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What Is a Wavefront?


In the simplest terminology, a wavefront can be explained by picturing light traveling as a bundle of rays. If you draw lines perpendicular to the tips of a bundle of light rays, you obtain what is called a wavefront map. In an eye with perfect vision, the wavefront is perfectly flat. The wavefront of an imperfect eye is irregular.
Types of distortions this wavefront acquires as it travels through the eye provide valuable information about vision errors and how to correct them.




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